MALOHING, RITHWAN SETIAWAN. “PENGARUH KAFEIN TERHADAP PENINGKATAN VO2MAX ATLET CABANG OLAHRAGA KARATE”. Indonesian Strength Conditioning and Coaching Journal, vol. 1, no. 1, Juli 2023, hlm. 6-11, https://ejournal.unesa.ac.id/index.php/isco/article/view/55247.